That's why.....!!!

I was having spark problems sometimes on a 400 1986WR.
I checked almost everything, spending so much time...
So I decided to take the motor out and inspecting piston, cylinder and around the ignition place...
Well, finally I had the right answer....

Always good to check clearance from the flywheel, easily done and a very cheap fix other than top end gaskets!

I absolutely love it when you actually find a physical problem an go. THATS IT!

No better feeling in the world knowing next time you go out on it that's ruled out.

common on the swedes when they have been disturbed..probably other bikes too

Good info, I am having weak spark on my 86 500, I will have to check that.

ol mate went to look at 96 wr 250 for $2800. "its just been rebuilt" say po...bike starts but runs pooh.... ol mate rings mr mechanic ..."whats it like?"
mr mc Hanic says "its good"..olmate says to PO , "its rooted, ill give you $1200..." PO says "done"
ol mate finds exactly what is seen above, a wind of black electrical tape..."its good, just like mr mechanic said"

I love that engine stand, I need to take the time to make something like that.